diff options
Diffstat (limited to 'llvm/lib/CodeGen/MachineCopyPropagation.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/MachineCopyPropagation.cpp | 14 |
1 files changed, 2 insertions, 12 deletions
diff --git a/llvm/lib/CodeGen/MachineCopyPropagation.cpp b/llvm/lib/CodeGen/MachineCopyPropagation.cpp index ea08365..5ec7c48 100644 --- a/llvm/lib/CodeGen/MachineCopyPropagation.cpp +++ b/llvm/lib/CodeGen/MachineCopyPropagation.cpp @@ -137,7 +137,7 @@ public: PreservedRegUnits.resize(TRI.getNumRegUnits()); for (unsigned SafeReg = 0, E = TRI.getNumRegs(); SafeReg < E; ++SafeReg) if (!RegMaskOp.clobbersPhysReg(SafeReg)) - for (auto SafeUnit : TRI.regunits(SafeReg)) + for (MCRegUnit SafeUnit : TRI.regunits(SafeReg)) PreservedRegUnits.set(SafeUnit); return PreservedRegUnits; @@ -937,16 +937,6 @@ void MachineCopyPropagation::ForwardCopyPropagateBlock(MachineBasicBlock &MBB) { if (CopyOperands) { Register RegSrc = CopyOperands->Source->getReg(); Register RegDef = CopyOperands->Destination->getReg(); - // It's possible that the previous transformations have resulted in a - // no-op register move (i.e. one where source and destination registers - // are the same and are not referring to a reserved register). If so, - // delete it. - if (RegSrc == RegDef && !MRI->isReserved(RegSrc)) { - MI.eraseFromParent(); - NumDeletes++; - Changed = true; - continue; - } if (!TRI->regsOverlap(RegDef, RegSrc)) { // Copy is now a candidate for deletion. @@ -1005,7 +995,7 @@ void MachineCopyPropagation::ForwardCopyPropagateBlock(MachineBasicBlock &MBB) { // Invalidate all entries in the copy map which are not preserved by // this register mask. bool MIRefedinCopyInfo = false; - for (unsigned RegUnit : TRI->regunits(Reg)) { + for (MCRegUnit RegUnit : TRI->regunits(Reg)) { if (!PreservedRegUnits.test(RegUnit)) Tracker.clobberRegUnit(RegUnit, *TRI, *TII, UseCopyInstr); else { |